course Mth 158
Question: * R.8.12. Simplify the cube root of 54
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Your solution:
3.8
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Question:
* R.8.18. Simplify the cube root of (3 x y^2 / (81 x^4 y^2) ).
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Your solution:
Cube root of (3)/(81x^3)
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Question:
* R.8.30. Simplify 2 sqrt(12) - 3 sqrt(27).
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Your solution:
-8.6
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Question:
* R.8. Expand (sqrt(x) + sqrt(5) )^2
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Your solution:
x+5
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Question:
* R.8.42. What do you get when you rationalize the denominator of 3 / sqrt(2) and what steps did you follow to get this result?
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Your solution:
I multiplied (3)/(sqrt2) And got (sqrt6)/(2)
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Question:
* R.8.48. Rationalize denominator of sqrt(2) / (sqrt(7) + 2)
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Your solution:
(sqrt14+2/11)
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Question:
* R.8.60. Simplify 25^(3/2).
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Your solution:
7812( ½)
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Question:
* R.8.72. Simplify and express with only positive exponents:
(xy)^(1/4) (x^2 y^2) ^(1/2) / (x^2 y)^(3/4).
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Your solution:
(x^5/4*y^5/4)/(x^6/4*y^¾)
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Question:
* R.8.84. Express with positive exponents:
( (9 - x^2) ^(1/2) + x^2 ( 9 - x^2) ^(-1/2) ) / (9 - x^2).
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Your Solution:
(37/18)/(9)
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